Since all major distros use the default options for ext4, I learn some safe tricks:
/dev/sda3 / ext4 noatime,commit=100,nouser_xattr,errors=remount-ro 0 1
noatime - Deactivates the file access time modification. It will write the access time only on write, not in any modification. If you don't need it and/or don't use it, you can disable it.
commit=100 - Increases the write interval between data and meta-data (the regular sync operation). Just keep in mind that if you doesn't have a power supply, this can be dangerous. If you're unsure, just skip this option.
nouser_xattr - No user extendend attributes, it safe to disable this (if you don't use it).
errors=remount-ro - For safety reasons, make the partition remount RO if something wrong occurs.